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Published on

11 Apr 2006

Abstract

The job and service-oriented paradigm of the Grid enables a wide spectrum of
applications to share the massive computational power across the Internet. In this talk, I
will present a complementary paradigm of virtual distributed environments to
accommodate arbitrary parallel/distributed applications that are hard to map to jobs or
service instances, applications that require customized execution and network
environments, and applications that require strong containment of risk and security
impact. Building on virtual machine and virtual network technologies, we have
developed VIOLIN, a middleware system that enables mutually isolated virtual
distributed environments in a shared distributed infrastructure like the Grid and
PlanetLab. Evaluation results in a number of real-world application scenarios (including
computer system education, nanoHUB, and Internet worm investigation) will be
presented to demonstrate the practicality and soundness of VIOLIN environment
virtualization techniques.

Bio

Professor Xu's research is on protection, management, and quality of service of next generation
distributed systems. He leads the Lab for Research in Emerging Network and Distributed Services
(FRIENDS). He has conducted projects in overlay and peer-to-peer networks, autonomic Grid
computing middleware, and mobile pervasive applications and services.

Especially, his group has been investigating runtime environment virtualization models and
technologies for shared distributed infrastructures. The goal is to protect a shared infrastructure from
un-trusted applications running on top of it and vice versa. Their research results have also been
effectively applied to the containment, emulation, and analysis of network attacks launched by human
or malware.

Dongyan Xu is the Year 2000 recipient of C.L. and Jane W-S. Liu Award in the Department of Computer
Science at UIUC. He is a member of ACM, USENIX, IEEE, and IEEE Communications Society. He is
affiliated with the Center for Education and Research in Information Assurance and Security (CERIAS)
and e-Enterprise Center. His research is supported by the National Science Foundation (NSF), Microsoft
Research, and Purdue Research Foundation.

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